You use a TRS cable from the DVP3 in to one of the expression inputs on the back of the KPA. Guitar cable goes from the guitar into the input on the front of KPA. See, as Ingolf said, no tone suck, as there's no audio going through the DVP3 (it's functioning as an expression pedal, controlling volume in the KPA. Volume can be set up to work at different stages of the signal chain. Read the manual for specifics).
Cheers,
Sam
Thanks Sam I thought so but I wanted to know if it was possible this way with single trs. Sounds like I can even control where in the signal chain.. Everyone on this forum is always helpful even when noons ask silly questions in wrong forums